Thanks for putting this up!
However, instead of manually attaching the files you've changed, can you use rbt post to upload a diff? That'll make it easier for us to see what things you've added, removed and changed.
SCM Web Hooks for reviewboard : Phase 1 [WIP]
Review Request #5483 — Created Feb. 16, 2014 and discarded
Generate url infrastructure for hosting services so that they can be called ro access web hooks. All code has been commented out because I was testing another change.